Cataract surgery lens is not suitable such as refractive mismatch, abnormal position of IOL, etc. Patients can replace the IOL, but the operation time is related to the patient’s condition. Cataract surgery refers to surgery that treats cataracts, improves the patient’s vision, enhances the quality of life, and prevents or treats cataract complications, and is usually combined with IOL implantation to restore the patient’s vision. If the IOL is mismatched or displaced, the patient can undergo another surgery to replace the IOL with a suitable one, but the exact duration of treatment depends on the patient’s condition. After cataract surgery, the cloudy lens is removed and an IOL is implanted into the eye to replace the original lens, so that external objects can be focused and imaged on the retina, thus improving the patient’s vision. It is recommended that post-cataract surgery patients follow the doctor’s instructions, have regular checkups, and seek prompt medical attention when discomfort occurs.